WO2013062842A1 - Process for producing ceria-zirconia-alumina composite oxides and applications thereof - Google Patents
Process for producing ceria-zirconia-alumina composite oxides and applications thereof Download PDFInfo
- Publication number
- WO2013062842A1 WO2013062842A1 PCT/US2012/060747 US2012060747W WO2013062842A1 WO 2013062842 A1 WO2013062842 A1 WO 2013062842A1 US 2012060747 W US2012060747 W US 2012060747W WO 2013062842 A1 WO2013062842 A1 WO 2013062842A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- zirconium
- cerium
- aluminum oxide
- compound
- zirconia
- Prior art date
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000002131 composite material Substances 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 title claims abstract description 33
- 239000003054 catalyst Substances 0.000 claims abstract description 57
- -1 cerium (IV) compound Chemical class 0.000 claims abstract description 39
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims abstract description 16
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 15
- GTEJAEKKYCZWHX-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[Al+3].[Zr+4].[Ce+3] Chemical compound [O--].[O--].[O--].[O--].[O--].[Al+3].[Zr+4].[Ce+3] GTEJAEKKYCZWHX-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000012066 reaction slurry Substances 0.000 claims abstract description 14
- 238000001354 calcination Methods 0.000 claims abstract description 9
- 230000001376 precipitating effect Effects 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 150000003755 zirconium compounds Chemical class 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims abstract description 5
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 18
- 150000002910 rare earth metals Chemical class 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 14
- 229910052726 zirconium Inorganic materials 0.000 claims description 12
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 8
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 4
- UJVRJBAUJYZFIX-UHFFFAOYSA-N nitric acid;oxozirconium Chemical compound [Zr]=O.O[N+]([O-])=O.O[N+]([O-])=O UJVRJBAUJYZFIX-UHFFFAOYSA-N 0.000 claims description 4
- 238000001694 spray drying Methods 0.000 claims description 4
- 229910052723 transition metal Inorganic materials 0.000 claims description 4
- 150000003623 transition metal compounds Chemical class 0.000 claims description 4
- 150000003624 transition metals Chemical class 0.000 claims description 4
- 229910052779 Neodymium Inorganic materials 0.000 claims description 3
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 229910052746 lanthanum Inorganic materials 0.000 claims description 3
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 3
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 3
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims description 2
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 claims description 2
- 229910052788 barium Inorganic materials 0.000 claims description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052712 strontium Inorganic materials 0.000 claims description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 2
- PGJHGXFYDZHMAV-UHFFFAOYSA-K azanium;cerium(3+);disulfate Chemical class [NH4+].[Ce+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O PGJHGXFYDZHMAV-UHFFFAOYSA-K 0.000 claims 1
- HKVFISRIUUGTIB-UHFFFAOYSA-O azanium;cerium;nitrate Chemical class [NH4+].[Ce].[O-][N+]([O-])=O HKVFISRIUUGTIB-UHFFFAOYSA-O 0.000 claims 1
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical class [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims 1
- OZECDDHOAMNMQI-UHFFFAOYSA-H cerium(3+);trisulfate Chemical class [Ce+3].[Ce+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O OZECDDHOAMNMQI-UHFFFAOYSA-H 0.000 claims 1
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical class [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 claims 1
- XJUNLJFOHNHSAR-UHFFFAOYSA-J zirconium(4+);dicarbonate Chemical class [Zr+4].[O-]C([O-])=O.[O-]C([O-])=O XJUNLJFOHNHSAR-UHFFFAOYSA-J 0.000 claims 1
- ZXAUZSQITFJWPS-UHFFFAOYSA-J zirconium(4+);disulfate Chemical class [Zr+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZXAUZSQITFJWPS-UHFFFAOYSA-J 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 14
- 239000001301 oxygen Substances 0.000 abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 abstract description 14
- 239000007789 gas Substances 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 7
- 238000003860 storage Methods 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 14
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- RCFVMJKOEJFGTM-UHFFFAOYSA-N cerium zirconium Chemical compound [Zr].[Ce] RCFVMJKOEJFGTM-UHFFFAOYSA-N 0.000 description 8
- 229930195733 hydrocarbon Natural products 0.000 description 8
- 150000002430 hydrocarbons Chemical class 0.000 description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical group [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 6
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000004215 Carbon black (E152) Substances 0.000 description 5
- LQCIDLXXSFUYSA-UHFFFAOYSA-N cerium(4+);tetranitrate Chemical class [Ce+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O LQCIDLXXSFUYSA-UHFFFAOYSA-N 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000908 ammonium hydroxide Substances 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 4
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- ITZXULOAYIAYNU-UHFFFAOYSA-N cerium(4+) Chemical class [Ce+4] ITZXULOAYIAYNU-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000004005 microsphere Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000010948 rhodium Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- GBNDTYKAOXLLID-UHFFFAOYSA-N zirconium(4+) ion Chemical class [Zr+4] GBNDTYKAOXLLID-UHFFFAOYSA-N 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910000323 aluminium silicate Inorganic materials 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 229910001593 boehmite Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 2
- WPQBNJRIWONKBL-UHFFFAOYSA-N cerium(3+);oxygen(2-);zirconium(4+) Chemical class [O-2].[Zr+4].[Ce+3] WPQBNJRIWONKBL-UHFFFAOYSA-N 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 239000006069 physical mixture Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- 238000012956 testing procedure Methods 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 150000000703 Cerium Chemical class 0.000 description 1
- 229910004625 Ce—Zr Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- 239000005749 Copper compound Substances 0.000 description 1
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 1
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical class CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- MLHCSEGGTGAQHZ-UHFFFAOYSA-G [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Zr+4].[Ce+3] Chemical class [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Zr+4].[Ce+3] MLHCSEGGTGAQHZ-UHFFFAOYSA-G 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- HZVVJJIYJKGMFL-UHFFFAOYSA-N almasilate Chemical compound O.[Mg+2].[Al+3].[Al+3].O[Si](O)=O.O[Si](O)=O HZVVJJIYJKGMFL-UHFFFAOYSA-N 0.000 description 1
- DVARTQFDIMZBAA-UHFFFAOYSA-O ammonium nitrate Chemical class [NH4+].[O-][N+]([O-])=O DVARTQFDIMZBAA-UHFFFAOYSA-O 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical class N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000007514 bases Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001649 bromium compounds Chemical class 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- XMPZTFVPEKAKFH-UHFFFAOYSA-P ceric ammonium nitrate Chemical compound [NH4+].[NH4+].[Ce+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O XMPZTFVPEKAKFH-UHFFFAOYSA-P 0.000 description 1
- 150000001785 cerium compounds Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 150000001880 copper compounds Chemical class 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- RCJVRSBWZCNNQT-UHFFFAOYSA-N dichloridooxygen Chemical compound ClOCl RCJVRSBWZCNNQT-UHFFFAOYSA-N 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 235000012243 magnesium silicates Nutrition 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229940110728 nitrogen / oxygen Drugs 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 description 1
- LRVUGEZGBKPRRZ-UHFFFAOYSA-L oxygen(2-);zirconium(4+);dichloride Chemical compound [O-2].[Cl-].[Cl-].[Zr+4] LRVUGEZGBKPRRZ-UHFFFAOYSA-L 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 150000003284 rhodium compounds Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 150000003748 yttrium compounds Chemical class 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/613—10-100 m2/g
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0027—Powdering
- B01J37/0045—Drying a slurry, e.g. spray drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/009—Preparation by separation, e.g. by filtration, decantation, screening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/03—Precipitation; Co-precipitation
- B01J37/031—Precipitation
- B01J37/035—Precipitation on carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/06—Washing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
- B01J37/088—Decomposition of a metal salt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1023—Palladium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1025—Rhodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/206—Rare earth metals
- B01D2255/2065—Cerium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20715—Zirconium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/209—Other metals
- B01D2255/2092—Aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/40—Mixed oxides
- B01D2255/407—Zr-Ce mixed oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/908—O2-storage component incorporated in the catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the invention relates to a process for producing ceria-zirconia-alumina composite oxides, and applications of the composite oxides produced by the process of the invention.
- TWC three-way catalyst
- Cerium-zirconium composite oxides are widely used as oxygen storage components (OSC's) in three-way catalysts, and are also key components in many environmental catalysts, due to their unique oxygen storage/release property and good hydrothermal stability.
- OSC's oxygen storage components
- severe sintering of cerium-zirconium mixed oxides may still occur when they are exposed to elevated temperatures, which typically also leads to a significant decrease in their oxygen storage capacity.
- composite oxides of cerium-zirconium with additional elements have been studied.
- WO 2006/070201 homogeneous aluminium- cerium-zirconium composite oxides prepared by co-precipitation of cerium/zirconium/aluminium salt precursors as described.
- U.S. Appl. Pub. No. 2007/01 91220 A1 materials with a surface coat of alumina on cerium- zirconium oxides were described.
- U.S. Appl. Pub. No. 2007/01 91220 A1 materials with a surface coat of alumina on cerium- zirconium oxides were described.
- a cerium-zirconium composite oxide is ball-milled together with ⁇ -alumina powder, zirconia powder, and water containing platinum and rhodium compounds to produce a slurry that is then coated on a flow-through monolith to produce an exhaust gas purification catalyst.
- the invention includes a process to produce ceria-zirconia-alumina composite oxides and the application of the materials.
- the process comprises combining a cerium (IV) compound and a zirconium (IV) compound with a slurry of aluminum oxide at a temperature greater than 40°C to produce a reaction slurry, then contacting the reaction slurry with a precipitating agent to precipitate insoluble cerium and zirconium compounds onto the aluminum oxide to form cerium-zirconium-aluminum oxide particles, and calcining the cerium-zirconium-aluminum oxide particles to produce the ceria-zirconia- alumina composite oxide.
- the ceria-zirconia-alumina composite oxide is utilized as a component on TWC and exhibits improved, CO, NO x , and hydrocarbon conversion.
- the invention is a process for producing a ceria-zirconia-alumina composite oxide.
- the process comprises first combining a cerium (IV) compound and a zirconium (IV) compound with a slurry of aluminum oxide at a temperature greater than 40°C to produce a reaction slurry.
- cerium (IV) compounds useful in the invention include, but are not limited to, cerium (IV) nitrates, ammonium nitrates, sulfates, ammonium sulfates, alkoxides (e.g., isopropoxides), and mixtures thereof.
- Preferred cerium (IV) compounds include cerium (IV) nitrate and cerium (IV) ammonium nitrate.
- Suitable zirconium (IV) compounds include, but are not limited to, zirconium (IV) carboxylates (e.g., acetate, citrate), halides (e.g., chlorides, bromides), oxyhalides (e.g., oxychloride), carbonates, nitrates, oxynitrate, sulfates, and mixtures thereof.
- Preferred zirconium (IV) compounds include zirconium (IV) oxynitrate and zirconium (IV) oxychloride.
- Suitable aluminum oxides useful in the practice of the invention are solid oxides that contain a major proportion of alumina (AI 2 O 3 ), and preferably are porous, in that they have numerous pores, voids, or interstices throughout their structures.
- suitable aluminum oxides are further characterized by having a relatively large surface area in relation to their mass.
- the term used herein and one normally used in the art to express the relationship of surface area to mass is "specific surface area”.
- the aluminum oxides for purpose of this invention preferably have a specific surface area of at least 10 m 2 /g, and more preferably from 50 m 2 /g to 500 m 2 /g, and most preferably from 80 m 2 /g to 300 m 2 /g.
- Preferred aluminum oxides include various forms of alumina including well known aluminas such as a-aluminas, ⁇ -aluminas, ⁇ -aluminas, ⁇ -aluminas, and activated aluminas.
- Activated aluminas are partially hydroxylated aluminum oxide whose chemical compositions can be represented by the formula Al 2 0 (3 . X) (OH) 2x , where x ranges from about 0 to 0.8.
- the aluminum oxide preferably has an average particle size greater than 0.05 ⁇ (micron), more preferably from about 0.1 1 ⁇ to about 400 ⁇ , and most preferably greater than 1 ⁇ , especially from 1 ⁇ to about 40 ⁇ .
- the pore volume of the aluminum oxide is in the range of about 0.1 to about 4.0 mL/g, more preferably from about 0.1 to about 2.0 ml_/g, and most preferably from about 0.1 to about 1 .0 mL/g.
- the average pore diameter is typically in the range of about 10 to about 1000 A, preferably about 20 to about 500 A, and most preferably about 50 to about 350 A.
- the aluminum oxide is a rare earth or alkaline earth- stabilized aluminum oxide, and more preferably the rare earth or alkaline earth-stabilized aluminum oxide contains a rare earth or alkaline earth metal selected from the group consisting of lanthanum, neodymium, praseodymium, yttrium, barium, and strontium.
- the rare earth or alkaline earth- stabilized aluminum oxide comprises from 0.1 to 20 weight percent rare earth or alkaline earth metal.
- the combination of cerium and zirconium compounds with the aluminum oxide slurry to produce a reaction slurry may be by any convenient method.
- a slurry of aluminum oxide is first formed by adding the aluminum oxide to a solvent.
- the solvent is preferably water.
- the aluminum oxide slurry preferably contains between 0.1 to 50 weight percent aluminum oxide, more preferably between 1 to 20 weight percent.
- the slurry is then heated to a temperature greater than 40°C, preferably greater than 50°C and most preferably at a temperature from 60°C to 1 00°C, and then the cerium (IV) compound and the zirconium (IV) compound are added.
- the order of addition of the cerium and zirconium is not particularly critical, so that the cerium may be added first, the zirconium may be added first, or the cerium and zirconium compounds may be added simultaneously.
- a rare earth or transition metal compound may also be combined with the cerium compound, zirconium compound and the aluminum oxide slurry to form the reaction slurry.
- the rare earth or transition metal compound may be added to the aluminum slurry prior to heating to a temperature greater than 40°C, prior to or following addition of the cerium (IV) compound and/or zirconium (IV) compound, or simultaneously with the added with the cerium (IV) compound and/or zirconium (IV) compound.
- the rare earth metal is preferably selected from the group consisting of lanthanum, neodymium, praseodymium and yttrium compounds.
- the transition metal is preferably selected from the group consisting of iron, manganese, cobalt and copper compounds.
- the rare earth metal or transition metal compound is added such that the molar ratio of rare earth or transition metal : cerium and zirconium ((moles of rare earth or transition metal) / (moles of cerium + moles of zirconium)) in the reaction slurry ranges from 0.001 to 10.
- the molar ratio of Ce:Zr is preferably within the range of 0.05 to 19, and more preferably is from 0.25 to 1 .5.
- reaction slurry Following formation of the reaction slurry, the reaction slurry is contacted with a precipitating agent to precipitate insoluble cerium and zirconium species onto the aluminum oxide and form cerium-zirconium- aluminum oxide particles.
- the precipitating agent is any compound that is capable of precipitating a soluble cerium (IV) compound and a soluble zirconium (IV) compound out of an aqueous solution.
- the precipitating agent is typically a basic compound, and may be selected from any suitable basic material, preferably such as alkali and alkaline earth metal carbonates, ammonium and alkylammonium carbonates, ammonium and alkylammonium hydroxides, alkali and alkaline earth metal hydroxides, water-soluble organic base compounds, and mixtures thereof.
- the precipitating agent is preferably ammonium hydroxide or sodium hydroxide.
- the cerium-zirconium- aluminum oxide particles are preferably isolated by using techniques well known in the art. These include filtration, decantation, evaporation, washing, drying, and spray-drying, preferably one or more of filtration, washing, or spray-drying.
- the cerium-zirconium-aluminum oxide particles are filtered and then washed with water or another solvent to isolate the particles prior to calcination.
- the cerium-zirconium-aluminum oxide particles subjected to spray-drying (or rapid drying) to form microspheres of particle size.
- microspheres typically have a particle size from 5 to 100 microns.
- the cerium-zirconium aluminum oxide particles are finally calcined to produce a ceria-zirconia-alumina composite oxide product.
- the calcination is typically performed by heating the cerium-zirconium-aluminum oxide particles, preferably under an oxidizing atmosphere such as air or a nitrogen/oxygen mixture, at an elevated temperature.
- the preferred temperature range for calcination is in the range of from 400 to 1000°C.
- calcination times of from about 0.5 to 24 hours will be sufficient to render the ceria-zirconia- alumina composite oxide product.
- the invention also includes the ceria-zirconia-alumina composite oxide produced by the process of the invention, and a three-way catalyst comprising one or more platinum group metals and the ceria-zirconia-alumina composite oxide.
- the platinum group metal (PGM) is preferably platinum, palladium, rhodium, or mixtures thereof; platinum, rhodium, and mixtures thereof are particularly preferred. Suitable loadings of PGM are 0.04 to 7.1 g/liter (1 to 200 g/ft 3 ) catalyst volume.
- the three-way catalyst is preferably coated on a substrate.
- the substrate is preferably a ceramic substrate or a metallic substrate.
- the ceramic substrate may be made of any suitable refractory material, e.g., alumina, silica, titania, ceria, zirconia, magnesia, zeolites, silicon nitride, silicon carbide, zirconium silicates, magnesium silicates, aluminosilicates and metallo aluminosilicates (such as cordierite and spudomene), or a mixture or mixed oxide of any two or more thereof. Cordierite, a magnesium aluminosilicate, and silicon carbide are particularly preferred.
- the metallic substrate may be made of any suitable metal, and in particular heat-resistant metals and metal alloys such as titanium and stainless steel as well as ferritic alloys containing iron, nickel, chromium, and/or aluminum in addition to other trace metals.
- the substrate may be a filter substrate or a flow-through substrate, and is most preferably a flow-through substrate, especially a honeycomb monolith.
- the substrate is typically designed to provide a number of channels through which vehicle exhaust passes. The surface of the channels is loaded with the catalyst.
- the three-way catalyst may be added to the substrate by any known means.
- the composite oxide or the PGM-containing composite oxide catalyst may be applied and bonded to the substrate as a washcoat, a porous, high surface area layer bonded to the surface of the substrate.
- the washcoat is typically applied to the substrate from a water-based slurry, then dried and calcined at high temperature. If only the composite oxide is washcoated on the substrate, the PGM metal may be loaded onto the dried washcoat support layer (by impregnation, ion-exchange, or the like), then dried and calcined.
- the invention also encompasses treating an exhaust gas from an internal combustion engine, in particular for treating exhaust gas from a gasoline engine.
- the method comprises contacting the exhaust gas with the three-way catalyst of the invention.
- aqueous cerium (IV) nitrate solution 37.2 kg, 1 6.3 wt.% Ce
- aqueous zirconium oxynitrate solution 27.0 kg, 14.6 wt.% Zr
- aqueous ammonium hydroxide solution 31 kg, 29 wt.% NH
- Catalyst 1 A contains 21 wt.% Ce0 2 and 1 5 wt.% Zr0 2 .
- Catalyst 1 B contains 21 wt.% Ce0 2 and 1 5 wt.% Zr0 2 .
- Comparative Catalyst 2 A physical mixture of CeZr oxide and Al 2 0 3 oxide is prepared by blending a ⁇ -alumina containing 4% La 2 0 3 with a cerium- zirconium composite oxide produced by combining aqueous cerium(IV) nitrate solution (18.2 kg, 7.7 wt.% Ce), aqueous zirconium oxynitrate solution (6.3 kg, 14.8 wt.% Zr), and aqueous ammonium hydroxide solution (7 kg, 29 wt.% NH 4 OH) at 70°C, and heating at 70°C for 1 hour while maintaining the pH above 8, then filtered and washed with distilled water.
- aqueous cerium(IV) nitrate solution (18.2 kg, 7.7 wt.% Ce
- aqueous zirconium oxynitrate solution 6.3 kg, 14.8 wt.% Zr
- aqueous ammonium hydroxide solution (7 kg, 29 wt.
- Comparative Catalyst 2 contains 21 wt.% Ce0 2 and 15 wt.% Zr0 2 .
- EXAMPLE 3 LABORATORY TESTING PROCEDURES AND RESULTS Powder samples of Catalysts 1 A and 1 B and Comparative Catalyst 2 are subjected to a thermal durability test by firing at 1000°C for 4 hours in air. After firing, the samples are characterized for BET surface area, XRD crystalline structure and oxygen release capacity.
- Catalyst 1 A has the highest surface area, followed by Comparative Catalyst 2 and then Catalyst 1 B.
- the lower surface area of Catalyst 1 B is attributed to lower thermal durability of boehmite compared to ⁇ -alumina.
- Catalyst 1 A and Comparative Catalyst 2 both utilize ⁇ -alumina.
- Catalyst 1 A has higher surface area, indicating the advantage of the present process for enhancing surface area.
- Catalyst 1 B show a single Ce 0 5 Zro 5O2 crystalline phase.
- Comp. Cat. 2 shows mixed cerium-zirconium phases.
- the oxygen release peak temperature is determined by a H 2 -TPR (temperature-programmed reduction) experiment.
- H 2 -TPR results for the catalysts all give one main peak, although a very broad peak for Comp. Cat. 2, at varying temperatures that can be assigned to the reduction of Ce (IV) to Ce (III) and the release of oxygen from Ce(IV).
- the results are shown in Table 1 .
- Oxygen release from Catalysts 1 A and 1 B appears at a lower temperature than that of Comp. Cat. 2.
- the percentage of Ce(IV) reduction to Ce(lll) is determined at three temperature ranges of 100-500°C, 500-600°C and 600-900°C. The results are shown in Table 2. The results indicate Cat. 1 A has about twice the amount of Ce(IV) reduced compared to Comp. Cat. 2 in the low temperature range of 100-500°C, again evidencing that materials prepared by the present invention can release oxygen more efficiently at lower temperatures.
- the ability to release oxygen more efficiently at lower temperature is a desirable characteristic for catalyst applications in environmental emission remediation.
- Catalyst 4B is the same as Comparative Catalyst 4A with the exception that the Ce-Zr-AI mixed oxide used in Comparative Catalyst 4A is replaced with the ceria-zirconia alumina composite oxide of Catalyst 1 A. Comparative Catalyst 4A and Catalyst 4B are tested according to the exhaust emissions Federal Test Procedure (FTP) following EPA certification procedures and tolerances.
- FTP exhaust emissions Federal Test Procedure
- 2.3 L Engine Vehicle FTP Test The TWCs are aged in a gasoline engine for 100 hours with maximum temperature at 924°C. The aged catalysts (4A and 4B) are tested on a 2.3L gasoline vehicle for tailpipe NO x , hydrocarbon (HC), and CO emissions during FTP cycle. The results are shown in Table 3, which shows the percentage decrease in emissions when Catalyst 4B is used compared to Comp. Cat. 4A.
- the TWCs are aged in a gasoline engine for 100 hours with maximum temperature at 877°C.
- the aged catalysts (4A and 4B) are tested on a 3.5L gasoline vehicle for tailpipe NO x , HC, and CO emissions during FTP cycle.
- the results are shown in Table 3, which shows the percentage decrease in emissions when using Catalyst 4B compared to Comp. Cat. 4A.
- the engine testing results show a significant decrease in NO x , CO and hydrocarbon emissions for a three-way catalyst system that utilizes the ceria- zirconia alumina composite oxide of the invention.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Catalysts (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020147013758A KR20140087017A (en) | 2011-10-27 | 2012-10-18 | Process for producing ceria-zirconia-alumina composite oxides and applications thereof |
EP12783753.2A EP2771097A1 (en) | 2011-10-27 | 2012-10-18 | Process for producing ceria-zirconia-alumina composite oxides and applications thereof |
RU2014121200/05A RU2014121200A (en) | 2011-10-27 | 2012-10-18 | METHOD FOR PRODUCING OXIDE COMPOSITE OXIDES CERIUM OXIDE - ZIRCONIUM OXIDE - ZIRCONIUM OXIDE AND THEIR APPLICATION |
BR112014009980A BR112014009980A2 (en) | 2011-10-27 | 2012-10-18 | process for producing a ceria-zirconia-alumina composite oxide, ceria-zirconia composite oxide, three-way catalyst, and method for treating a gas from an internal combustion engine |
JP2014538843A JP2014534156A (en) | 2011-10-27 | 2012-10-18 | Process for producing ceria-zirconia-alumina composite oxide and use thereof |
CN201280052460.8A CN103889554A (en) | 2011-10-27 | 2012-10-18 | Process for producing ceria-zirconia-alumina composite oxides and applications thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/283,123 | 2011-10-27 | ||
US13/283,123 US20130108530A1 (en) | 2011-10-27 | 2011-10-27 | Process for producing ceria-zirconia-alumina composite oxides and applications thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013062842A1 true WO2013062842A1 (en) | 2013-05-02 |
Family
ID=47146695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2012/060747 WO2013062842A1 (en) | 2011-10-27 | 2012-10-18 | Process for producing ceria-zirconia-alumina composite oxides and applications thereof |
Country Status (8)
Country | Link |
---|---|
US (1) | US20130108530A1 (en) |
EP (1) | EP2771097A1 (en) |
JP (1) | JP2014534156A (en) |
KR (1) | KR20140087017A (en) |
CN (1) | CN103889554A (en) |
BR (1) | BR112014009980A2 (en) |
RU (1) | RU2014121200A (en) |
WO (1) | WO2013062842A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013188664A1 (en) | 2012-06-15 | 2013-12-19 | Basf Corporation | Composites of mixed metal oxides for oxygen storage |
JP2017502917A (en) * | 2013-12-23 | 2017-01-26 | ローディア オペレーションズ | Inorganic composite oxide and method for producing the same |
WO2023157010A1 (en) * | 2022-02-16 | 2023-08-24 | Hindustan Petroleum Corporation Limited | A catalyst for promoting co combustion in fcc units and preparation process of the catalyst |
EP4269351A4 (en) * | 2020-12-24 | 2024-06-26 | Mitsui Mining & Smelting Co., Ltd. | Composite oxide and method for producing same |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013007809A1 (en) | 2011-07-14 | 2013-01-17 | Treibacher Industrie Ag | Ceria zirconia alumina composition with enhanced thermal stability |
DE102011107702A1 (en) * | 2011-07-14 | 2013-01-17 | Sasol Germany Gmbh | Process for the preparation of composites of alumina and cerium / zirconium mixed oxides |
CN103599768A (en) * | 2013-12-10 | 2014-02-26 | 山东允能催化技术有限公司 | Zirconium/lanthanum-modified gamma-alumina catalyst coating material and preparation method thereof |
CN103706370B (en) * | 2013-12-17 | 2015-09-09 | 西南化工研究设计院有限公司 | A kind of coal gas high-temperature methanation catalyst and preparation method thereof |
WO2016037059A1 (en) * | 2014-09-05 | 2016-03-10 | Molycorp Minerals, Llc | High porosity cerium and zirconium containing oxide |
GB2538130B (en) * | 2015-02-06 | 2017-08-23 | Johnson Matthey Plc | Three-way catalyst comprising coated extruded silver-containing molecular sieve and use thereof |
KR101685044B1 (en) * | 2016-03-24 | 2016-12-12 | 한국화학연구원 | Complex metal oxides catalyst based multi-component ceria-zirconia for removal of volatile organic compounds and the preparation method thereof |
WO2017184256A1 (en) * | 2016-04-22 | 2017-10-26 | Basf Corporation | Platinum group metal catalysts supported on large pore alumina support |
CN106268740B (en) * | 2016-08-23 | 2019-04-30 | 昆明新光能源环保科技有限公司 | A kind of loaded catalyst and its preparation method and application for low concentration combustible component anoxycausis in liquid nitrogen washing tail-gas |
GB2554859A (en) | 2016-10-04 | 2018-04-18 | Johnson Matthey Plc | NOx adsorber catalyst |
GB2560943A (en) * | 2017-03-29 | 2018-10-03 | Johnson Matthey Plc | NOx adsorber catalyst |
CN111447997B (en) * | 2018-01-08 | 2023-08-01 | 太平洋工业发展公司 | Method for producing a Kong Chu oxygen material for exhaust gas treatment, oxygen storage material and use thereof |
JP7045942B2 (en) * | 2018-06-20 | 2022-04-01 | 株式会社豊田中央研究所 | Core-shell type oxygen absorption / release material, its manufacturing method, exhaust gas purification catalyst using it, and exhaust gas purification method |
EP3877337A1 (en) * | 2019-01-04 | 2021-09-15 | Pacific Industrial Development Corporation | Nanocrystal-sized cerium-zirconium oxide material and method of making the same |
CN113365948A (en) * | 2019-01-29 | 2021-09-07 | 太平洋工业发展公司 | Nanocrystal-sized cerium-zirconium-aluminum oxide material and preparation method thereof |
CN113874108B (en) * | 2019-06-27 | 2024-03-15 | 巴斯夫公司 | Layered catalytic article and method of making a catalytic article |
WO2021034898A1 (en) * | 2019-08-21 | 2021-02-25 | Gevo, Inc. | Upgrading fusel oils over doped alumina |
CN110560056B (en) * | 2019-08-30 | 2022-11-01 | 无锡威孚环保催化剂有限公司 | Universal small gasoline engine tail gas catalyst and preparation method thereof |
US11541373B2 (en) | 2019-11-19 | 2023-01-03 | Toyota Motor Engineering & Manufacturing North America, Inc. | Mixed oxide catalyst for oxygen storage applications and a method for making the catalyst |
RU2755558C2 (en) * | 2019-12-06 | 2021-09-17 | Федеральное государственное автономное образовательное учреждение высшего образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" | Method for the synthesis of a composition based on aluminum oxide and a solid solution of cerium and zirconium oxides |
CN113860344B (en) * | 2020-06-30 | 2023-04-25 | 中国石油天然气股份有限公司 | Porous alumina matrix with high hydrothermal stability and preparation method thereof |
JP2022029851A (en) * | 2020-08-05 | 2022-02-18 | トヨタ自動車株式会社 | Monolith base material, production method of monolith base material, and exhaust gas purification catalyst using monolith base material |
KR20220028810A (en) * | 2020-08-31 | 2022-03-08 | 주식회사 엘지화학 | Manufacturing method for ceria-zirconia composite oxides, ceria-zirconia composite oxides and catalyst comprising same, manufacturing method for butadiene using zinc-ferrite catalyst |
KR20240021314A (en) * | 2021-06-14 | 2024-02-19 | 다이치 키겐소 카가쿠 코교 컴퍼니 리미티드 | Complex oxide powders, friction material compositions and friction materials |
CN114100594B (en) * | 2021-11-26 | 2023-04-11 | 四川大学 | Cerium-zirconium-aluminum-based oxide micro-nano composite catalytic material and preparation method thereof |
CN118302239A (en) * | 2022-02-10 | 2024-07-05 | 庄信万丰股份有限公司 | Improved catalyst for gasoline engine exhaust gas treatment |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06114264A (en) * | 1992-10-05 | 1994-04-26 | Nissan Motor Co Ltd | Production of catalyst for purification of exhaust gas |
JPH07300315A (en) | 1994-04-28 | 1995-11-14 | Nissan Motor Co Ltd | Complex, catalyst body using the same and its production |
US5883037A (en) | 1994-05-27 | 1999-03-16 | Rhone-Poulenc Chimie | Thermally stable/highly reducible catalyst compositions comprising alumina and the oxides of cerium and zirconium |
US6150288A (en) | 1996-10-07 | 2000-11-21 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Composite oxide, composite oxide carrier and catalyst |
GB2358146A (en) * | 1999-09-10 | 2001-07-18 | Mitsui Mining & Smelting Co | Auxiliary catalyst for purifying exhaust gas |
JP2003033669A (en) * | 2001-05-15 | 2003-02-04 | Suzuki Motor Corp | Exhaust gas cleaning catalyst and method of manufacturing the same |
WO2006070201A2 (en) | 2004-12-30 | 2006-07-06 | Magnesium Elektron Limited | Composite oxides or hydroxides comprising alumina, zirconia and optionally ceria and/or rare earth oxides for automotive catalyst applications and method of manufacturing |
US20070191220A1 (en) | 2003-03-17 | 2007-08-16 | Umicore Ag & Co. Kg | Oxygen storage material, process for its preparation and its application in a catalyst |
CN101954277A (en) * | 2010-08-26 | 2011-01-26 | 宁波科森净化器制造有限公司 | Preparation process of vehicle three-way catalyst coating layer |
US20110171092A1 (en) | 2004-09-16 | 2011-07-14 | Daiichi Kigenso Kagaku Kogyo Co., Ltd. | Cerium/zirconium-base composite oxide, method for producing the same, oxygen storage/release component using said cerium-zirconium-base composite oxide, exhaust gas purification catalyst, and exhaust gas purification method using the same |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006007056A1 (en) * | 2006-02-15 | 2007-08-16 | Hte Ag The High Throughput Experimentation Company | Oxidation catalyst for exhaust treatment and process for its preparation |
-
2011
- 2011-10-27 US US13/283,123 patent/US20130108530A1/en not_active Abandoned
-
2012
- 2012-10-18 CN CN201280052460.8A patent/CN103889554A/en active Pending
- 2012-10-18 EP EP12783753.2A patent/EP2771097A1/en not_active Withdrawn
- 2012-10-18 RU RU2014121200/05A patent/RU2014121200A/en not_active Application Discontinuation
- 2012-10-18 BR BR112014009980A patent/BR112014009980A2/en not_active IP Right Cessation
- 2012-10-18 WO PCT/US2012/060747 patent/WO2013062842A1/en active Application Filing
- 2012-10-18 KR KR1020147013758A patent/KR20140087017A/en not_active Application Discontinuation
- 2012-10-18 JP JP2014538843A patent/JP2014534156A/en active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06114264A (en) * | 1992-10-05 | 1994-04-26 | Nissan Motor Co Ltd | Production of catalyst for purification of exhaust gas |
JPH07300315A (en) | 1994-04-28 | 1995-11-14 | Nissan Motor Co Ltd | Complex, catalyst body using the same and its production |
US5883037A (en) | 1994-05-27 | 1999-03-16 | Rhone-Poulenc Chimie | Thermally stable/highly reducible catalyst compositions comprising alumina and the oxides of cerium and zirconium |
US6150288A (en) | 1996-10-07 | 2000-11-21 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Composite oxide, composite oxide carrier and catalyst |
US6306794B1 (en) | 1996-10-07 | 2001-10-23 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Composite oxide, composite oxide carrier and catalyst |
GB2358146A (en) * | 1999-09-10 | 2001-07-18 | Mitsui Mining & Smelting Co | Auxiliary catalyst for purifying exhaust gas |
JP2003033669A (en) * | 2001-05-15 | 2003-02-04 | Suzuki Motor Corp | Exhaust gas cleaning catalyst and method of manufacturing the same |
US20070191220A1 (en) | 2003-03-17 | 2007-08-16 | Umicore Ag & Co. Kg | Oxygen storage material, process for its preparation and its application in a catalyst |
US20110171092A1 (en) | 2004-09-16 | 2011-07-14 | Daiichi Kigenso Kagaku Kogyo Co., Ltd. | Cerium/zirconium-base composite oxide, method for producing the same, oxygen storage/release component using said cerium-zirconium-base composite oxide, exhaust gas purification catalyst, and exhaust gas purification method using the same |
WO2006070201A2 (en) | 2004-12-30 | 2006-07-06 | Magnesium Elektron Limited | Composite oxides or hydroxides comprising alumina, zirconia and optionally ceria and/or rare earth oxides for automotive catalyst applications and method of manufacturing |
CN101954277A (en) * | 2010-08-26 | 2011-01-26 | 宁波科森净化器制造有限公司 | Preparation process of vehicle three-way catalyst coating layer |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013188664A1 (en) | 2012-06-15 | 2013-12-19 | Basf Corporation | Composites of mixed metal oxides for oxygen storage |
EP2861533A4 (en) * | 2012-06-15 | 2016-02-17 | Basf Corp | Composites of mixed metal oxides for oxygen storage |
JP2017502917A (en) * | 2013-12-23 | 2017-01-26 | ローディア オペレーションズ | Inorganic composite oxide and method for producing the same |
EP4269351A4 (en) * | 2020-12-24 | 2024-06-26 | Mitsui Mining & Smelting Co., Ltd. | Composite oxide and method for producing same |
WO2023157010A1 (en) * | 2022-02-16 | 2023-08-24 | Hindustan Petroleum Corporation Limited | A catalyst for promoting co combustion in fcc units and preparation process of the catalyst |
Also Published As
Publication number | Publication date |
---|---|
KR20140087017A (en) | 2014-07-08 |
JP2014534156A (en) | 2014-12-18 |
EP2771097A1 (en) | 2014-09-03 |
CN103889554A (en) | 2014-06-25 |
US20130108530A1 (en) | 2013-05-02 |
BR112014009980A2 (en) | 2019-09-24 |
RU2014121200A (en) | 2015-12-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20130108530A1 (en) | Process for producing ceria-zirconia-alumina composite oxides and applications thereof | |
JP7518763B2 (en) | Exhaust gas purification catalyst | |
KR20160019490A (en) | Integrated supports for emission control catalysts | |
US20180071679A1 (en) | Automotive Catalysts With Palladium Supported In An Alumina-Free Layer | |
US10883402B2 (en) | Titania-doped zirconia as platinum group metal support in catalysts for treatment of combustion engine exhausts streams | |
JP2005506900A (en) | Layered catalyst composite | |
EP2528683A1 (en) | Mixed-phase ceramic oxide three-way catalyst formulations and methods for preparing the catalysts | |
EP3389861A1 (en) | Catalyst system for lean gasoline direct injection engines | |
EP3253489A1 (en) | Three-way catalyst | |
CN111315480A (en) | Niobium oxide doped materials as rhodium supports for three-way catalyst applications | |
US10220373B2 (en) | Carrier for exhaust gas purification catalyst | |
JPWO2018199249A1 (en) | Exhaust gas purification catalyst and exhaust gas purification method using the same | |
JP2578219B2 (en) | Method for producing exhaust gas purifying catalyst | |
JPH044043A (en) | Heat-resistant catalyst for purifying exhaust gas | |
JPWO2018147408A1 (en) | Exhaust gas purification catalyst composition, method for producing the same, and automobile exhaust gas purification catalyst | |
JP6681347B2 (en) | Exhaust gas purification catalyst carrier and exhaust gas purification catalyst | |
JP2020062645A (en) | Carrier for exhaust gas purification catalyst and exhaust gas purification catalyst | |
JPH0523599A (en) | Catalyst for decontaminating exhaust gas | |
JP3488999B2 (en) | Exhaust gas purification catalyst composition, method for producing the same, and exhaust gas purification catalyst | |
RU2790008C2 (en) | Catalyst for exhaust gas purification | |
KR20240064639A (en) | Particulate filter with partially coated catalyst layer | |
CN118076435A (en) | Exhaust gas purifying catalyst and exhaust gas purifying catalyst device for vehicle using the same | |
JPH10272357A (en) | Catalyst for purifying exhaust gas |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12783753 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2014538843 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REEP | Request for entry into the european phase |
Ref document number: 2012783753 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012783753 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 20147013758 Country of ref document: KR Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2014121200 Country of ref document: RU Kind code of ref document: A |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112014009980 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112014009980 Country of ref document: BR Kind code of ref document: A2 Effective date: 20140425 |